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위선암에서 Matrix Metalloproteinase-2, Cathepsin D 및 E-cadherin의 발현
이상권,박승철,김원우,김욱,이교영,전해명,김응국,고용복,Lee Sang Kuon,Park Seung Cheol,Kim Won Woo,Kim Wook,Lee Kyo Young,Jeon Hae Myung,Kim Eung Kook,Koh Yong Bok 대한위암학회 2002 대한위암학회지 Vol.2 No.3
Purpose: The prognosis of gastric cancer depends on the depth of invasion, lymph-node metastasis, invasion to adjacent tissues, and distant metastasis. Recently, it is known that tumor-associated proteases and adhesion molecules have been shown to play a relevant role in the process of progression and metastasis. The purpose of our study was to demonstrate the value of MMP-2 (matrix metalloproteinase), cathepsin D and E-cadherin as prognostic factors. Materials and Methods: In this study, formalin-fixed, paraffin-embedded tissue blocks from 69 patients with gastric cancer were immunohistochemically studied using antibodies to MMP-2, cathepsin D, and E-cadherin, and their expressions were analyzed according to the pathologic stage, lymph-node metastasis, histological differentiation, and patient survival. The medical records of these patients were retrospectively reviewed. Results: Increased expression of MMP-2 significantly correlated with advanced pathologic stage (P=0.026). Patients with lymph-node metastasis also had increased expression of MMP-2. Those patients with increased expression of MMP-2 showed a poorer survival; nevertheless, it was not statistically significant. Increased expression of cathepsin D significantly correlated with advanced pathologic stage (p=0.029). However, no correlation was observed between advanced pathologic stage and either lymph-node status or histological differentiation. Patients with increased expression of cathepsin D had a poorer survival, but that result was not statistically significant. No association was found between reduced expression of E-cadherin and pathologic stage, lymph-node status, or histological differentiation. Also, no correlation was found between the expression of E-cadherin and survival. In addition, when a combination of MMP-2 and cathepsin D expressions was analyzed, if both were negative, the survival seems to be longer, but it was not statistically significant. Conclusions: In patients with gastric cancer, expressions of MMP-2 and cathepsin D correlated with tumor stage; therefore, they may be considered as prognostic factors.
식이유도 비만 흰쥐에서 루와이 위우회술이 체중, 그렐린 및 PYY<SUB>3-36</SUB>에 미치는 영향
이상권(Sang Kuon Lee),정헌(Hun Jung),전해명(Hae Myung Jeon),김응국(Eung Kook Kim) 대한외과학회 2010 Annals of Surgical Treatment and Research(ASRT) Vol.79 No.3
Purpose: Obesity is considered an epidemic worldwide. Nonsurgical treatment such as dietary, physical and pharmacological therapies have limited success and thus, bariatric surgery is the ultimate option. Roux-en-Y gastric bypass (RYGB) is a bariatric procedure, which is a restrictive and malabsorptive procedure simultaneously. The purpose of this study was to develop surgical rat models of bariatric surgery and analyze the effect of gastric bypass on body weight, ghrelin and polypeptide YY3-36 (PYY3-36) changes in rats. Methods: RYGB, sleeve gastrectomy (SG) and sham operation were performed in diet-induced obese rats and compared to obese control and normal control rats. Results: In RYGB group, 20.7±8.56% of weight loss was achieved on postoperative day 18 and maintained thereafter. This outcome was significant compared to SG (8.8±1.82%) and sham operated (6.2±2.45%) groups. When pre- and postoperative ghrelin levels were compared, there was a significant decrease in RYGB group (P<0.028); nonetheless, there was no difference in SG and sham operated groups. When pre- and postoperative PYY3-36 levels were compared, there was a significant increase in RYGB (P<0.028), SG (P<0.031) and sham operated (P<0.031) groups. Conclusion: We developed surgical rat models of RYGB and SG. Those rats that underwent RYGB lost significant body weight and maintained the weight thereafter. The decrease in ghrelin and increase in PYY3-36 may be associated with loss of appetite and delay in intestinal transit time with subsequent weight loss maintenance. In the future, this rat model would serve as a tool for further study on endocrine regulation of obesity.
이상권 ( Sang Kuon Lee ),김응국 ( Eung Kook Kim ) 대한소화기학회 2007 대한소화기학회지 Vol.50 No.4
Gastroesophageal reflux disease (GERD) is a chronic disease deteriorating patient`s quality of life. With the advent of proton pump inhibitors, treatment failures have decreased considerably. However, surgical therapy offers the potential for cure in more than 90% of patients with GERD. Specific indications for antireflux surgery are: incomplete response to medical therapy, frequent recurrences despite the medical treatment, laryngopharyngeal, and/or respiratory symptoms, and complications of GERD, such as esophageal stricture, erosive esophagitis, esophageal ulcer, and/or Barrett`s esophagus. The introduction of laparoscopic surgery in early ninties had a profound impact on many surgical fields, including the treatment of GERD. In this review, laparoscopic Nissen fundoplication is described and controversial topics, such as total vs. partial fundoplication, and the natural history of Barrett`s esophagus after antireflux surgery are addressed. (Korean J Gastroenterol 2007;50:220-225)
방상영,정재희,이상권,송영택,Bang, Sang-Young,Chung, Jae-Hee,Lee, Sang-Kuon,Song, Young-Tack 대한소아외과학회 2002 소아외과 Vol.8 No.2
When jaundice persists for more than 14 days postnatally, the early diagnosis of surgical jaundice is important for the prognosis in extrahepatic biliary atresia after draining procedure. The role of diagnostic laparoscopy to differenctiate medical causes of jaundice from biliary atresia is evaluated in this report. Four patients with prolonged jaundice have been included in this study. When the gallbladder was not visualized we proceeded to laparotomy. In patients with enlarged gallbladder visualized at laparoscopy, laparoscopic guided cholangiogram was performed, and laparoscopic liver biopsy was done for those who had a patent biliary tree. Two patients had small atretic gallbladder and underwent a Kasai hepato-portoenterostomy. One patients showed a patent gallbladder and common bile duct with atresia of the common hepatic and intrahepatic ducts, and they underwent a Kasai hepatic-portoenterostomy. One patient showed an enlarged gallbladder and laparoscopic-guided cholangiogram were normal. Laparoscopic liver biopsy was performed. There were no complications. Laparoscopy with laparoscopic-guided cholangiogram may be a valuable method in accurate and earlier diagnosis in an infant with prolonged jaundice.